Any new source subject to this subpart shall achieve the following new source performance standards:
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of precious metals, including silver, incinerated or smelted | ||
Copper | 5.760 | 2.745 |
Cyanide (total) | 0.900 | 0.360 |
Zinc | 4.590 | 1.890 |
Combined metals | 1.350 | |
Ammonia (as N) | 599.900 | 263.700 |
Total suspended solids | 67.500 | 54.000 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of precious metals in the granulated raw material | ||
Copper | 0.819 | 0.390 |
Cyanide (total) | 0.128 | 0.051 |
Zinc | 0.653 | 0.269 |
Combined metals | 0.192 | |
Ammonia (as N) | 85.310 | 37.500 |
Total suspended solids | 9.600 | 7.680 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/liter of spent plating solution used as a raw material | ||
Copper | 1.280 | 0.610 |
Cyanide (total) | 0.200 | 0.080 |
Zinc | 1.020 | 0.420 |
Combined metals | 0.300 | |
Ammonia (as N) | 133.300 | 58.600 |
Total suspended solids | 15.000 | 12.000 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of gold produced by cyanide stripping | ||
Copper | 4.736 | 2.257 |
Cyanide (total) | 0.740 | 0.296 |
Zinc | 3.774 | 1.554 |
Combined metals | 1.11 | |
Ammonia (as N) | 493.200 | 216.800 |
Total suspended solids | 55.500 | 44.400 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of precious metals, including silver, produced in refinery | ||
Copper | 1.280 | 0.610 |
Cyanide (total) | 0.200 | 0.080 |
Zinc | 1.020 | 0.420 |
Combined metals | 0.300 | |
Ammonia (as N) | 133.300 | 58.600 |
Total suspended solids | 15.000 | 12.000 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of gold produced by solvent extraction | ||
Copper | 0.806 | 0.384 |
Cyanide (total) | 0.126 | 0.050 |
Zinc | 0.643 | 0.265 |
Combined metals | 0.189 | |
Ammonia (as N) | 83.980 | 36.920 |
Total suspended solids | 9.450 | 7.560 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of gold produced by electrolysis | ||
Copper | 0.011 | 0.005 |
Cyanide (total) | 0.002 | 0.001 |
Combined metals | 0.003 | |
Zinc | 0.009 | 0.004 |
Ammonia (as N) | 1.160 | 0.510 |
Total suspended solids | 0.131 | 0.104 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of gold precipitated | ||
Copper | 5.632 | 2.684 |
Cyanide (total) | 0.880 | 0.352 |
Zinc | 4.488 | 1.848 |
Combined metals | 1.320 | |
Ammonia (as N) | 586.500 | 257.800 |
Total suspended solids | 66.00 | 52.800 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of platinum precipitated | ||
Copper | 6.656 | 3.172 |
Cyanide (total) | 1.040 | 0.416 |
Zinc | 5.304 | 2.184 |
Combined metals | 1.560 | |
Ammonia (as N) | 693.200 | 304.700 |
Total suspended solids | 78.000 | 62.400 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of palladium precipitated | ||
Copper | 7.680 | 3.660 |
Cyanide (total) | 1.200 | 0.480 |
Zinc | 6.1200 | 2.520 |
Combined metals | 1.800 | |
Ammonia (as N) | 799.800 | 351.600 |
Total suspended solids | 90.000 | 72.000 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.00 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of other platinum group metals precipitated | ||
Copper | 6.656 | 3.172 |
Cyanide (total) | 1.040 | 0.416 |
Zinc | 5.304 | 2.184 |
Combined metals | 1.560 | |
Ammonia (as N) | 693.200 | 304.700 |
Total suspended solids | 78.000 | 62.400 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of gold contained in PGC product | ||
Copper | 1.152 | 0.549 |
Cyanide (total) | 0.180 | 0.072 |
Zinc | 0.918 | 0.378 |
Combined metals | 0.270 | |
Ammonia (as N) | 120.000 | 52.740 |
Total suspended solids | 13.500 | 10.800 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of precious metals, including silver, produced in refinery | ||
Copper | 0.000 | 0.000 |
Cyanide (total) | 0.000 | 0.000 |
Zinc | 0.000 | 0.000 |
Combined metals | 0.000 | |
Ammonia (as N) | 0.000 | 0.000 |
Total suspended solids | 0.000 | 0.000 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
NSPS for the Secondary Precious Metals Subcategory
Pollutant or pollutant property | Maximum for any 1 day | Maximum for monthly average |
mg/troy ounce of total precious metals produced through this operation | ||
Copper | 64.000 | 30.500 |
Cyanide (Total) | 10.000 | 4.000 |
Zinc | 51.000 | 21.000 |
Combined metals | 15.000 | |
Ammonia (as N) | 6665.000 | 2930.000 |
Total Suspended Solids | 750.000 | 600.000 |
pH | (1) | (1) |
1 Within the range of 7.5 to 10.0 at all times.
40 C.F.R. §421.264